Filling control device



July 5, 1960 R. F. PARKS 2,943,649

FILLING CONTROL DEVICE Filed Dec. 51, 1956 I INVENTOR.

ROBERT F. PARKS A TTORNEY 2,943,649 mrnvo CONTROL DEVICE Robert F.Parks, University Ridge Apartments, Apt. 39,

Greenville, S.C.

. Filed Dec. '31, 1956, Ser. No. 631,529

Claims. or. 139-217 This invention relates to shuttles for looms andmore especially to a filling control device therefor.

Various devices have been employed in connection with the threadingblock or shuttle eye for controlling the filling being dispensedtherefrom during weaving. These devices have included tension padsplaced in various positions within the threading block. Manydifliculties have arisen in connection with the use of these tensionpads because of the failure of the shuttle to thread properly on thefirst pick after a bobbin transfer operation and due to a failure toprovide uniform tension during the weaving operation. This failure toprovide uniform tension during the weaving operation may be occasionedfor many reasons which will be discussed in greater detail below.

Accordingly, it is an object of this invention to provide a fillingcontrol device which will thread on the first pick after transfer andprovide a more uniform tension thereafter during the weaving operation.

Another object of this invention is to place the filling yarn under thecontrol of spaced horizontal and vertical tension pads during weaving soas to prevent vertical and horizontal movement of the yarn out of thenormal path of yarn delivery.

Anotherobject of this invention is to provide a filling control devicewhich will afford greater latitude and flexibility in the adjustment ofthe tension to be exerted by the tension pads on the filling duringweaving.

Still another object of this invention is to provide a filling controldevice including a pair of substantially vertical tension pads and apair of horizontal tension pads spaced rearwardly of the verticaltension pads, the vertical tension pads being inclined slightly so as todirect the yarn between the horizontal tension pads without loss oftension.

Yet another object of this invention is to provide a filling controldevice including a pair of vertical tension pads and a pair ofhorizontal pads spaced rearwardly thereof so that if an impact force isexerted which would cause one of the pairs of tension pads tomomentarily bounce open and release the filling the other pair oftension pads would not release the tension on the filling thus providingtension control of the filling at all times.

The construction designed to carry out the invention will be hereinafterdescribed, together with other features thereof.

The invention will be more readily understood from a reading of thefollowing specification and by reference to the accompanying drawingsforming a part thereof, wherein an example of the invention is shown andwherein:

Figure l'is a side elevation showing a shuttle including a fillingcontrol device constructed in accordance with the present invention, V

Figure 2 is an enlarged transverse sectional view taken on the line 2-2in Figure 1, I

Figure 3 is an enlarged transverse sectional view taken along the line3-3 in Figure l, and Figure 4 is a perspective view, at a slightlyreduced scale, showing a threading block, including the filling controldevice constructed in accordance with the present invention with partsbroken away, and showing the associated parts of the shuttle in brokenlines for clarity of illustration.

Referring more particularly to the drawing, a shuttle, which may be ofany standard construction, is illustrated at S. A threading block isillustrated at T and yarn or filling Y is shown being dispensed from thebobbin or quill B which is carried by the shuttle S in the usualfashion. The threading block T is positioned within the cavity :10provided in the shuttle for that purpose and is secured therein by abolt (not shown) which passes through the hole 11.

The threading block T has a substantially vertical slot 12 which isdisposed in the normal path of the yarn after a bobbin transferoperation has taken place. A home or yarn guide portion 13 is providedto position the yarn within the slot 12 after the bobbin changeoperation has occurred. fIhe slot 12 is defined by the home 13 and thetransverse wall 14 carried integrally at the 7 forward portion of thethreading block T. A longitudinally extending wall 15 projectsrearwardly from the transversely extending wall 14 and carries atransversely extending yarn guideportion 16 which is in partialalignment with the transversely extending wall 14. Anupper curved yarnguide portion 16a is in substantial alignment with the upper portion ofthe slot 12 and serves to guide the yarn into a transversely extendinghorizontally disposed slot 17. The walls 14 and 15 and the yarn guideportion 16 define a recess of cavity 18 within the threading block T andtogether with the spaced sl0ts12 and 17 form a yarn channelbroadlydesignated at 19.

The threading block T has a base portion 20 which carries the home 13integrally therewith at the forward right hand portion thereof andserves together with the yarn guide portion 16 to define the slot 17 andto carry into grally therewith the walls 14 and 15. The lower portion ofthe home 13 has a yarn delivery eye 21 therein which is in substantiallythe same horizontal plane as is the base 20. The yarn delivery eye 21 isprovided at the sides thereof by a pair of vertically disposed steelpins 22 and 23 and is provided at the top with the steel pin 24. Theyarn delivery eye 21 has a slot 25 in the lower medial portion thereofformed by the projections 20a and 13a which extend from the base 20 andfrom the home 13, respectively.

The substantially vertical slot 12 is inclined inwardly so as to passdiagonally of the threading block T as is shown in Figures 2 and 3. Thisinclination is for the purpose of causing yarn introduced at the upperend of the slot on the first pick after a bobbin change operation to beurged inwardly over the thread guide surface 168: and downwardly intothe transverse horizontal slot 17. The vertical inclined slot 12 isprovided with a pair of tension pads 26 and 27 and it will be noted thateach of these tension pads has an outwardly flaring entrance portion 26aand 27a which are adapted to be received by the recesses 26b and 27bwithin the wall 14 and the home 13, respectively. It will be noted byreference to Figure 4 that the entrance portions 26a and 2711 areprovided with downwardly inclined grooves 26c which tend to causemovement of the filling Y in a downward direction. The lower portions ofthe pads 26 and 27 are slidably carried by the steel pin 28 which issuitably carried by the threading block T as by a pressed fit.

The tension pads 26 and 27 are spring-biased toward each other as by thecoil springs 29 and 30 which are positioned within suitable holes orrecesses 29a and 30a. The recess 30a is formed within a threaded element31 which is positioned within the bore 32 within the thread= ing block Tso as to provide means. for adjusting the Patented July 5, 1960 pressureexerted thereby against the pad 26 so as to adjust the tension exertedby the pads 26 and 27 against the yarn Y. The recess 29q'}.is formedwithin the threading block T.

The horizontal slot 17 which is disposed in the normal path of yarndelivery during weaving and which is aligned with the lower portion ofthe vertical slot 12, is also provided with a pair of tension pads 33and 34. These tension pads are also slidably mounted on a steel pin 35which is suitably carried. by the threading block as by a pressed fit.The upper tension pad 34 is spring-biased downwardly ,by the coil spring36 which is carried within the recess 36a within the threading block T.The lower tension pad 33 is upwardly biased by .the spring 37 carriedwithin'the recess 37a. The recess 37a is formed within a threadedelement 38 which is threadably carried within the bore 39 ofv thethreading block T.

The horizontal pads, 33 and Marc provided with entrance portions whichare outwardly flaring as at 33a and 34a. These outwardly flaringentrance portions are in substantial longitudinal alignment with theupper entrance portions 26a and 27a. The entrance portions 33:; and 34aare received by recesses 33b and 34b within the base portion and thethread guide portion 16, respectively. If desired, the entrance portions33a and 34a may be provided with inwardly inclined grooves 330 such asdescribed in connection with the upper entrance portions 26a and 27a.

''In operation, therefore, on the first pick after a bobbin change"operation the yarn passes over the home 13 and between the, forwardsubstantially vertical or inclined pads 26 and 27 and over the threadguide surface 16a and between the rear horizontal tension pads 33 and34. After the yarn Y thus enters the yarn channel 19 a downward movementof the yarn within the channel will cause the yarn to be urged inwardlytoward the center of the threading block to the position shown in Figure4. This is the normal path of yarn delivery during weaving and the yarnwill be confined against vertical movement by the horizontal pads whilethe vertical pads will prevent lateral movement of the yarn. Since theyarn is under the control of the forward vertical pads as well as therear horizontal pads, two adjustments are provided for adjusting thetension exerted on the yarn by the tension pads Since yarn or fillingmay be wound on the quills or bobbins either in a clockwise orcounter-clockwise direction, itwill be necessary that the threadingblock be constructed'in at least two forms to accommodate such winding.One form will be so constructed as to properly control fillingwhich iswound clockwise on the bobbin and one form will beconstmcted which willproperly control filling which is wound in a counter-clockwise directionon the bobbin. The major difference in the two constructions is theposition of the entrance of the horizontal and vertical pads toaccommodate receiving the filling on the reed or shed side of thethreading block. It is to' be understood that while reference has beenmade to threading blocks which apply controlled amounts of tension onthe yarn that this invention could, with slight modification, be usedwhere it is desirable to have very little or no tension applied to theyarn. In such instance a pair of thread control devices would beconstructed so as to control the yarn without applying tension after ithas been directed to the proper running position.

While a preferred embodiment of the invention has been described usingspecific terms, such description is for illustrative purposes only, andit is to be understood that changes and variations rnay be made withoutdeparting from the spirit or scope ofthe following claims.

What is claimed is: 1. A filling control device for, shuttles including,a threading block, substantiallyvertical tension pads carried bysaidthreadingblock,and horizontal tension pads.

transversely disposed with respect to the threading block carried bysaid threading block spaced rearwardly of said vertical tension pads,said substantially vertical tension pads being inclined and sopositioned as to prevent substantial lateral movement of the fillingwithin the horizontal tension pads during weaving.

2. A filling control device for shuttles including, a threading block,substantially vertical tension pads carried by said threading blockhaving an upper yarn entrance portion, and horizontal tension padstransversely disposed with respect to the threading block having a yarnentrance portion carried by said threading block spaced rearwardly ofsaid vertical tension pads, said substantially vertical tension padsbeing inclined and so positioned as to prevent substantial lateralmovement of the filling within the horizontal tension pads duringweaving, the yarn entrance portion of the vertical and horizontaltension pads beingin substantial alignment to facilitate threading ofthe shuttle.

3. In a filling control device for shuttles having a threading block,the improvement including, substantially vertical tension pads carriedby the forward portion of said threading block, and horizontaltensionpads transversely disposed with respect to the threading block carriedby therearward portion of said threading block, said vertical tensionpads being inclined so as to guide the filling between the horizontalpads, and prevent substan' tial lateral movementof thefilling within thehorizontal tension pads during weaving, whereby the filling is undercontrol of the vertical and horizontal tension pads during weaving.

4. In a filling control device for shuttles to be employed in loomhaving automatic bobbin change mechanism and having a threading block,the improvement including, substantially'vertical tension pads having anupper yarn entrance portion carried by the forward portion of saidthreadingblock, and horizontal tension pads transversely disposed withrespect to the threading block having a yarn entrance portion carried bythe rearward portion of said threading block;disppsed in the normal pathof yarn delivery, the yarn entrance portions of the vertical andhorizontal tension pads being in substantial alignment with the naturalposition of the filling after an automatic change operation, saidvertical tension pads being inclined so as to guide thefilling betweenthehorizontal pads, whereby the filling v is under control of thevertical and horizontal tension pads during weaving.

5. In a filling control device for shuttles to be employed in loomhaving automatic bobbin change mechanism and having a threading block,the improvement including, substantially vertical tension pads having anupper yarn entrance portion carried by the forward portion of saidthreading block, horizontal tension pads transversely disposed withrespect tothethreading block having a yarn entrance portion, carried bythe rearward portion of said threading block disposed in the normal pathof yarn delivery, the yarn entranceportions of the vertical andhorizontal tension pads beingin substantial alignment with the naturalposition ofthefilling after an automatic change operation,saidvertical-tension pads being inclined so as to guide the fillingbetween the horizontal pads, and adjustable resilient means normallyurging said pads together to exert tension on the filling, whereby thefilling is under control of the vertical and horizontal tension padsduring weaving References Cited in the file-of this patent UNITED STATESPATENTS

